Mention against each of the following wheather regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case. Marble floor with water spread over it .

Mention against each of the following wheather regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case. (e) Mirror .

Mention against each of the following wheather regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case. Chalk powder .

Mention against each of the following wheather regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case. Cardboard surface .

Mention against each of the following wheather regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case. (f) Piece of paper .

Mention against each of the following wheather regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case. Polished wooden table .

In each of the following cases, state whether the function is one-one, onto or bijective. Justify your answer. (i) f : R to R defined by f (x) =3-4x (ii) f : R to R defined by f (x) =1 + x ^(2)

What is the shape of the wavefront in each of the following cases: (a) Light diverging from a point source. (b) Light emerging out of a convex lens when a point source is placed at its focus. (c) The portion of the wavefront of light from a distant star intercepted by the Earth.